Kinematograph mechanism.



R. T. HAINES. KINEMATOGEAPH MECHANISM.

APPLICATION FILED AUG. 25, 1906.

901 ,962, Patented Oct. 27, 1908.

3 sums-SHEET 1-..

(CIT 55 5 v l "a gwnlqn of R. T. HAINES. I KINEMATOGRAPH MECHANISM.

APPLICATION FILED AUG.25, 1906.

Patented Oct. 27, 1908.

3 SHEETSSHEET 2.

'R. T. HAINES.

KINEMATOGRAPH MECHANISM.

APPLICATION FILED AUG.25, 1906.

9O 1 962 Patented Oct. 27, 1908.

3'SHEETSSHEET 3 x 5 12 z B ((hlnsses l lnveflrm' Aiiofngy ROBERT THORN HAINES, OF LONDON, ENGLAND.

KINEMATOGRAPH MECHANISM.

e To all whom it may concern:

Be it known that I, ROBERT THORN I-lAINEs, a subject of the King of Great Britain, residing at 26 Osnaburgh street, London, England, have invented new and useful Improvements in or Relating to Kinematograph Mechanism, of which the following is a specification. I

My invention relates to improvements in apparatus adapted for the reproduction of livlng pictures or animated scenes on a screen or the like. v

The object of my invention is to enable one source of light to be used in duplex or multiplex projection; to dispense with the use of shutter mechanism altogether if desired, and to obtain a more perfect'reproduction of living pictures or animated scenes upon a screen or any desired exhibiting surface by obviating the fluctuation of light,

flickering and blurring, and by minimizingthe vibration, unsteadiness, spots and other 1mperfect1ons or lrregularltles.

According to my invention I may employ a duplex projecting system and a pair of projecting lenses," the lmages ,or pictures from which are thrown upon coincident positions upon the .screen. I use one source of light, and provide mirrors and prisms '30 arranged that when the picture projected from one lens is fully illuminated or exposed the next picture in' succession projected from the other'lens is fully darkened or obscured, and when only a portion of one picture is illuminated'the corresponding portion of the other picture is darkened and the remainder illuminated, so that the totals of-the proportions of the pictures illuminated and thrown or projected on the screen bythe lenses amount to but never exceed one complete picture, and throughout the picture projected, and-no decrease, obscuration or variation of light whatever, and at all times during the actual projection or exposure the film containing the projected of exposed pictures or the films or parts thereof containing the exposed picture, or

' the film or films or parts thereof containing the partly exposed picture, remains absolutely stationary and steady. I do not confine myself to a duplex projecting system, as a triplex or multiplex system may, under certain circumstances, be

Specification of Letters Patent.

Application filed August 25, 1906. Serial No. 332,021.

Patented Oct. 27, 1908.

found desirable, inwhich case the number.

of mirrors, prisms, condensers and lenses are correspondingly increased.

My invention is more particularly de scribed with reference to the accompanying drawings, in which Figure 1 shows a side elevation of a duplex projecting apparatus. 'Fig. 2 shows a detail. view of the reflecting mirrors and means for reciprocating the same across the source of light. Fig. 3 shows a section through the condensers and prisms.

Referring now to Fig; 1 of the drawings,

I arrange a single source of light, 1, and at a suitable distance in front of said light I arrange a pair of mirrors, 2, one placed be- ..side the other at right angles 'to the light and at right anglesor some other suitable angle to each' other. As shown in Fig. 2, the reflecting mirrors, 2, are mounted on a shaft, 3, whichis' moved backwards and forwards by means of the crank pin, 4, of the rotating-disk, 5, working in the guide slot, 6, arranged at-the end of said shaft, 8. At a suitable distance on each side of said mirrors I arrangea pair of prisms 11 and condensers, 12, in casings 7, said prisms 11 being adapted to receive the reflection of the at right angles through the projector lenses, 8, in the ordinary way. I

It will be'readily understood tl atas the mirrors, 2,. are moved backwards and forwards across the source of light, l, the light comes gradually and alternately on one or the other mirror as the mirror moves in front thereof and throws the beam alterlight from said mirrors, 2, and to reflect it nately upon one or the other prism, 7 so that the living picture on the screen is composed of a SGIIGS of colncident pro ections as the light is alternately reflected by one whole operation there is a continuity of.

being made from one picture of a series on -the film to the next picture of the other series, inasmuch as the portion not reflected through the one lenswill be reflected through the other during the change and thus avoid the dark interval and absence of picture] which. cause the eltect oi flickering in the ordinary system of projection.

13y the employn'ient of a single source oi light I am enabled to avoid the ditlercncev 'in illumination which is liable to occur when 5 two lights are used, and which would bedetrimental to the pertect l'tl'H'tStHtHtltH] O'li the pictures.

It will be obvious that my apparatus may be litted'to any \\'elll\'no\\'n kincmatograph mechanism, and l have not therefore dc- Ht'lllittl any spetial mechanism. 4 p I, employ a lilm or films 13 of pictures arranged in serial order, and produced in such a manner as tobe :ulaptable to the particular projecting system which maybe employed with my apparatus.

I prefer to use with the type of mechanism described only one positive film, on which 1 may print the odd numbers consecutively and the'even numbers consecu tively side by side the width of two pictures, f

commencing No. 2 picture a suflicient distance from No. 1 to leave a loop, or I may leave inter *als between the odd Jnmnbered pictures and printthe even numbered pictures in those intervals, connncncing No. 2 picture a sufficient distance from rlo. 1 picture to enable a loop to be left 1n the film in order that each odd picture may be translated while each even picture remains stationaryand is being projected, and vice versa.

If instead of one'I use two positive films; I first obtain the full negative series on one negative film in the usual. Way, and print from it two positive films each containing the full series, or I print each alternate picture on each of such positive films, that is to say, if the pictures are numbered consecutively I print all the odd numbers on one positive film and all the even numbers on the other.

It should be understood that though I have used the term mirror throughout the specification I do not limit myself to a mirror alone, but any reflecting surface such as a prism can obviously be used With equal facility for reflecting the beam of light from the source of light to-the prisms and condensers, and from thence to the projecting lenses.

I may arrange the lenses of the condensers combined and placed in front of the prism, or in any other desired position, instead of being separated and placed at opposite faces oftheprism, as shown in Fig. 3 of the drawmgs.

Adjusting means must be provided to adjust the distance between the mirrors ac cording to the distance of the light from said mirrors which varies according to the distance of the apparatus from the screen.

it the mirrors are too close to one another a white line is projected on to the picture while it too far apart a black line is projected. mount each of said mirrors on the shaft 3 by means 01' a bracket 9 shown in dotted lines on Fig. 2, and in each o'l. said brackets In ord-r to allowof adjustment I I arrange a set screw 1!) adapted to be exposure and obscuration of a series of pietures projected on to the screen.

2. In a kmematograph apparatus the combination of a single source oflight, a pair oit-reflectingmirrors set at an angle to each other mounted on a shaft, a crank adapted to reciprocate said shaft, and sets of prisms and condensers adapted to receive alternately and gradually the reflected 'beam from said mirrors and to e'tt'ect the gradual exposure and obscuration of a series of pietures projected on to the screen.

3. In a vkinematographapparatus the combination of a single source of light, a pair of reflecting mirrors set at an angle to each other, means for adjusting the distance between saideniirrors, means for giving'said mirrorsa reciprocating movement across the light beam from said single source of light and sets o'fprisms and condensers arranged on each side of said mirrors adapted to receive alternately and gradually the reflected light beam from said mirrors and to effect the gradual exposure and obscuration of a series of pictures projected on to the screen. 4. In a kinematograph apparatus the combination of a single source of light, a pair, of rellectii'ig mirrors set at an angle to each other mounted on a shaft, a crank adapted to reciprocate said shaft, and sets of prisms and ctmdensers arranged on each side of said mirrors adapted to receive alternately and gradually the reflected light beam -from said mirrors and to effect the gradual exposure and obscuration of a series o:l:' picturesprojected on to the screen.

ln testiinony whereof I have signedmy name to this specification in the presence of two subscribing witnesses.

ROBERT TIllOltN IIAINES.

lVitnesses:

An'rnun J. Hrnrnnxs, LnoNAnn l l lAYNT-IS. 

